package homeWork.Practise;

import java.io.FileInputStream;
import java.util.*;

public class TestDay6 {
    public static void main(String[] args){
        /*Set s = new TreeSet();
        s.add(1);
        s.add(2);
        s.add(3);
        Iterator iter = s.iterator();
        while (iter.hasNext()){
            int l = (int)iter.next();
            System.out.println(l);
        }*/

        /*Map m = new HashMap();
        m.put(0,1);
        m.put(1,2);
        m.put(2,3);
        System.out.println(m.get(0));
        System.out.println(m);
        System.out.println(m.entrySet());
        System.out.println(m.keySet());*/

        
    }
}
